Technically yes, you can put raw sausages in a Crock Pot for most slow cooker sausage recipes. The one downside though is that they won’t look anywhere near as appetizing, and have a bit less flavor without the browning.Click to see full answer. Similarly, how long do raw sausages take to cook in slow cooker?In this easy cooking video, I cook some good Italian sausage in my Cosori slow cooker. I cooked the sausage on high for 3 hours, and turned it over in the crockpot about half way through the cook.Furthermore, do you have to brown sausages before putting in casserole? 1 Answer. There’s no health issue here, the sausages will be cooked enough to be safe. The reason you fry off the sausages first is that you make the casings more edible, get flavor from maillard reactions and browning, and maybe get rid of some of the fat (if you discard the fat that comes out of the sausages that is) Beside above, do you have to cook sausage before putting in sauce? Ground meatballs, Italian sausage, pork, or ox tail, can all be put directly into the sauce raw as long as you are cooking the sauce until the meat is cooked.Can I put frozen sausages in the slow cooker?Thaw if frozen; cook in crockpot on low for 5-6 hours or high for 3-4 hours; until sausage is cooked all the way through. (Note-don’t worry if your sausage isn’t all the way thawed. It can also cook from frozen, it might just take a little longer.)